If Python ever adopts the BCPL rule for implicit line continuation if the last thing on a line is an operator (or if there's an open parentheses), then the break-after-an-operator rule would be more persuasive.
;)

[IIRC, the BCPL rule was that there was an implicit continuation if the grammar would not allow inserting a semicolon at the end of the line, which covered both the open-parens and last-item-is-operator cases, and probably a few others.] But I should shut up and leave shut discussions to python-ideas.


On 15 April 2016 at 13:48, Ian Lee <ianlee1521@gmail.com> wrote:
Cross posting the comment I’d left on the issue [1].

> My preference is to actually break that logic up and avoid the wrapping in the first place, as in [2]. Which in this particular class has the side benefit of that value being used again in the same function anyways.

> I'm starting to realize that Brandon Rhodes really had a big impact on my ideas of styling as I've been learning Python these past few years, as this was another one style I'm stealing from that same talk [3].


~ Ian Lee | IanLee1521@gmail.com

On Apr 15, 2016, at 10:49, MRAB <python@mrabarnett.plus.com> wrote:

On 2016-04-15 18:03, Victor Stinner wrote:
> Hum.
>
>          if (width == 0
>              and height == 0
>              and color == 'red'
>              and emphasis == 'strong'
>              or highlight > 100):
>              raise ValueError("sorry, you lose")
>
> Please remove one space to vertically align "and" operators with the
> opening parenthesis:
>
>          if (width == 0
>             and height == 0
>             and color == 'red'
>             and emphasis == 'strong'
>             or highlight > 100):
>              raise ValueError("sorry, you lose")
>
> (I'm not sure that the difference is obvious in a mail client, you
> need a fixed width font which is not the case in my Gmail editor.)
>
> It helps to visually see that the multiline test and the raise
> instruction are in two different blocks.
>
> (Moreover, the pep8 checks of OpenStack simply reject such syntax, but
> I cannot use this syntax anymore :-))
>
I always half-indent continuation lines:

       if (width == 0
         and height == 0
         and color == 'red'
         and emphasis == 'strong'
         or highlight > 100):
           raise ValueError("sorry, you lose")
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